ASTM A269 TP304 / 304L Stainless Steel Heating and Cooling Coils , Coil Tubing

ASTM A269 TP316L Stainless Steel Coil Tube Seamless Coils for HVAC Systems

An A269 TP304 Large Diamameter Tube Coil is a high-performance, corrosion-resistant heat transfer component made from a specific grade of austenitic stainless steel, formed into a helical or custom-shaped coil. Its large diameter and Type 304 stainless steel construction make it ideal for handling large fluid volumes, resisting clogging, and operating in corrosive or sanitary environments.

These coils are workhorses in industries where corrosion resistance, cleanability, and high flow are paramount:

• Industrial Chillers and Heat Exchangers: As the evaporator or condenser in large-capacity cooling systems.

• Food & Beverage Processing:

  • Jacketed Cooking/Kettles

  • Pasteurizers

  • Hot Water Tanks for sanitation

• Pharmaceutical & Biotechnology: For heating or cooling process vessels and bioreactors where sanitary conditions are critical.

• Chemical Processing: Heating or cooling corrosive chemical streams in reactors and storage tanks.

• Marine & Offshore: Heat exchangers for engine cooling, using seawater or fresh water.

• Energy & Power Plants: As intercoolers, aftercoolers, or lubricant coolers.

• Wastewater Treatment: For heating anaerobic digesters or other process tanks where fouling is a concern.

Important Considerations for Selection

When specifying an A269 TP304 Large Diameter Tube Coil, you must define:

• Diameter and Wall Thickness: e.g., 1.5" OD x 1.4" ID, Schedule 10S.

• Material Grade: Strongly recommend TP304L over TP304 for welded coils.

• Coil Dimensions: Overall diameter, height, pitch between coils.

• Design Pressure and Temperature: The maximum operating conditions.

• Connections: Type, size, and location of headers and fittings.

• Surface Finish: For sanitary applications, a specific Ra (roughness average) like a 2B mill finish or an electropolished finish may be required.